SPECIFICATIONS
Controls overall
output level of
the module
RCA phono input
jacks
Screw terminal
input panel
SPECIFICATIONS
INSTALLATION:
The module installs at the rear panel of products
accepting the standard 6-pin card-edge module
connection. Align card-edge connector with top and
bottom circuit board guides. Snap module into cardedge socket, push flush with rear panel and install
(furnished) mounting screws.
Gain: 0 to -60 dB
Input Sensitivity: 100 mV to 6.3 V
(-17.8 dBu to 14 dBu)
Frequency Response:
20 Hz to 20 kHz ±0.5 dB
S/N Ratio: 90 dB
Muting Level: 60 dB
Power: +24 V DC
Control: Gain
Mounting: Edge card connector
Weight: 2.5 oz
Dimensions: 3.07" H x 1.38" W x 3.70" D
Load Impedance: 10k ohm
MMA™SERIES
MODULE AUX
™
2
Auxiliary Preamp Input
Module With Muting
ARCHITECTURAL ACOUSTICS
¨
AUXª-2
BOARD LAYOUT
2
Hot
AUXª2 BLOCK DIAGRAM
AUXª2 SCHEMATIC
3
+24 VDC
Common
A
R101
1.5k
g
J 100
J 100
g
R104
T
1.5k
B
R112
1.5k
R113
1.5k
C100
+
22R50
VR100
50KTRMRA
R103
470k
C105
22R50
R108
470k
Gain
Mute
Output
Common
Mute 1
Mute 2
R100
GND
10FP
C107
.015
R114
100k
N/C
CR102
1N4148
+
CR103
1N4148
C110
.1
+
C106
47V50
8
C111
22R50
R110
10k
3
+
2
U100
+
-
4560
4
R107
12k
C102
100PF
C101
R106
+
6.8k
22R50
+
R109
470k
2N3904
Q101
R102
10k
R111
1k
6534
Q100
R105
100k
CR100
1N4148
CR101
1N4148
GC1
CLIP1785
To defeat Mute 1 slave operation, remove CR100
To defeat Mute 2 slave operation, remove CR 101
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